Class: SyntaxTree::YARV::OptGetConstantPath

Inherits:
Object
  • Object
show all
Defined in:
lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

opt_getconstant_path performs a constant lookup on a chain of constant names. It accepts as its argument an array of constant names, and pushes the value of the constant onto the stack.

### Usage

~~~ruby ::Object ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(names) ⇒ OptGetConstantPath

Returns a new instance of OptGetConstantPath.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3464

def initialize(names)
  @names = names
end

Instance Attribute Details

#names ⇒ Object (readonly)

Returns the value of attribute names.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3462

def names
  @names
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3481

def ==(other)
  other.is_a?(OptGetConstantPath) && other.names == names
end

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3501

def call(vm)
  current = vm.frame._self
  current = current.class unless current.is_a?(Class)

  names.each do |name|
    current = name == :"" ? Object : current.const_get(name)
  end

  vm.push(current)
end

#canonical ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3497

def canonical
  self
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3477

def deconstruct_keys(_keys)
  { names: names }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3468

def disasm(fmt)
  cache = "<ic:0 #{names.join("::")}>"
  fmt.instruction("opt_getconstant_path", [cache])
end

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3485

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3489

def pops
  0
end

#pushes ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3493

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3473

def to_a(_iseq)
  [:opt_getconstant_path, names]
end